Re: [Boost-users] follow up on regex questions

From: John Maddock (john_at_[hidden])
Date: 2007-10-05 05:53:10

Mike Marchywka wrote:
> This hangs ( I thought it may be a repetition problem but reliably
> hits on this data/regex combo first pass):

Not for me: it works just fine here, my complete test program is below, 
tested with cygwin g++ 3.4.4, and the version of Boost that's downloadable 
with cygwin:

g++ -I /usr/include/boost-1_33_1 t.cpp -lboost_regex-gcc-mt

t.cpp:

#include <boost/regex.hpp>
#include <iostream>

int main()
{
   try{
      boost::regex e("ATG(...)*?(TAG|TAA|TGA)");
      const char* s = 
"GAGATATTCACCTCTCATTGCCTTTTCCAGAGGTTGTTGAACTTAGTGGCCTGAGCATTTTA"
         "TCTGCAAAATGACTAGCAATTTTTTTTTAAGTTTCAGGCTTTTTTAATGCCCTAAATACAGTTGATCCATTACCGAGTGT"
         "GTTACATGCATAGGAATTTACTGATCTTTTCTTTTCCCCCTAGCTAGTTTTAAAGTTACTGAGCATAACGAGCTTTAAAA"
         "ATTCTTCAGAATACAAATAAATGAATAGATAAAAGACTACCTCCATTTGATAAATCATTCAAGAAAAAGAAAAAAAAACT"
         "TGAGCAAGCTAAGAAAGTCATTAACAGCCATATTTCTGATGGAACTAATGTxGATACCTACTCAAGCTAxCACTxGAATC"
         "TAATAATCTGTGAGAGAAGAAATGGGAAAAGGTATGAAAGC";

      boost::cregex_iterator a(s, s+strlen(s), e), b;
      while(a != b)
      {
         std::cout << *a << std::endl;
         ++a;
      }
   }
   catch(boost::regex_error e)
   {
      std::cout << e.what() << std::endl;
   }
   catch(std::exception e)
   {
      std::cout << e.what() << std::endl;
   }
}

So I still think that you have issues with your binary install, or build 
method or something.

At this stage I'd recomend you rebuild the regex binaries using whatever 
build options you are using: the exception problem is strongly indicating 
that there is a binary incompatibity problem somewhere.

HTH, John.